修复 .cocos-project.json 不存在时可能崩溃的问题

README.md

@@ -51,7 +51,7 @@
 
 ### Cocos Creator 2.4.+
 
-不支持（后续可能会有计划支持）
+目前不支持（后续可能会有计划支持）
 
 ### Cocos Creator 2.3.3
 

src/cosos/CocosProjectConfig.ts

@@ -14,8 +14,18 @@ export class CocosProjectConfig {
     projectName: string | undefined;
 
     fromJson(json: any): CocosProjectConfig {
-        this.engineVersion = json["engine_version"];
-        this.projectName = json["projectName"];
+        this.engineVersion = this._getJson(json, "engineVersion");
+        this.projectName = this._getJson(json, "projectName");
         return this;
     }
+
+    private _getJson(json: any, key: string) {
+        if (json) {
+            let value = json[key];
+            if (value != null && value != undefined) {
+                return value;
+            }
+        }
+        return undefined;
+    }
 }

src/tasks/TaskConfig.ts

@@ -60,7 +60,7 @@ export class TaskConfig {
     /**
      * Cocos 项目配置
      */
-    cocosProject: CocosProjectConfig;
+    cocosProject: CocosProjectConfig | undefined;
 
     constructor(buildOutputDirPath: string) {
         // console.log("当前执行文件所在目录路径", __dirname);
@@ -76,7 +76,10 @@ export class TaskConfig {
         this.buildOutputMainJsFilePath = path.join(this.buildOutputDirPath, "main.js");
         this.buildOutputLoaderPluginJsFilePath = path.join(this.buildOutputDirPath, "src/assets/loaderplugin.js");
         this.inputLoaderPluginJsFilePath = path.join(path.dirname(process.argv[1]), "loaderplugin.js");
-        this.cocosProject = new CocosProjectConfig().fromJson(JSON.parse(fs.readFileSync(this.buildOutputCocosProjectJsonFilePath).toString()));
+
+        if (fs.existsSync(this.buildOutputCocosProjectJsonFilePath)) {
+            this.cocosProject = new CocosProjectConfig().fromJson(JSON.parse(fs.readFileSync(this.buildOutputCocosProjectJsonFilePath).toString()));
+        }
 
         console.log("初始化项目配置");
         console.log(this);